Patents by Inventor Daniel A. Allen, Jr.

Daniel A. Allen, Jr. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Automatic debris separation system
    Patent number: 6883667
    Abstract: The invention is an automatic debris separation system for effecting air separation of fragmented materials, such as size-reduced fiber feedstocks derived from textile wastes. The system uses high-velocity air within an elutriation assembly to efficiently remove ferrous and non-ferrous metal debris from recyclable polymer fibers. In particular, the system may employ automatic process control strategies to vary airflow within the elutriation assembly in process-controlled response to measured metal contamination, thereby ensuring that post-separation metal contamination is maintained at or below an upper contamination limit.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: April 26, 2005
    Assignee: Wellman, Inc.
    Inventors: James A. Lindsey, Daniel A. Allen, Jr., Jonathan W. Skelley
  • Method of automatic debris separation
    Patent number: 6883668
    Abstract: The invention is an automatic debris separation process for effecting air separation of fragmented materials, such as size-reduced fiber feedstocks derived from textile wastes. The process uses high-velocity air within an elutriation assembly to efficiently remove ferrous and non-ferrous metal debris from recyclable polymer fibers. In particular, the process may employ automatic process control strategies to vary airflow within the elutriation assembly in process-controlled response to measured metal contamination, thereby ensuring that post-separation metal contamination is maintained at or below an upper contamination limit.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: April 26, 2005
    Assignee: Wellman, Inc.
    Inventors: James A. Lindsey, Daniel A. Allen, Jr., Jonathan W. Skelley